Ventilated window sill



Jan. 8, 1952 SQPLATA 2,581,727

VENTILATED WINDOW SILL Filed June 25, 1949 INVENTOR.

LOUIS SOP LATA ATTORNEY Patented Jan. 8, 1 952 UNITED, STATES PATENT or -"icE Louis Soplata, Novelty, Ohio Application June 25, 1949, Serial No. 101,327

a window sill of the character described, which is effective to convey all condensation on the window and window frame to the exterior of the building, thereby preventing damage to the interior of the building.

Another object of the invention is to provide a window sill of the character described which may be quickly, easily, and inexpensively installed, and inexpensively maintained, and which eliminates costly replacements.

A further object of the invention to provide a window sill of the character described, which will not shrink, warp or crack, and which requires no nails, screws or paint.

A still further object of the invention is to provide a window sill of the character described which has embodied therein air spaces which minimize the freezing of moisture on the window and sill, and which serve as eificient reservoirs in case of a prolonged and severe freeze.

6 Claims. (01. 2070) Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings, forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

Fig. 1 is a perspective view of a window sill embodying the novel features of the invention, and showing also, in cross-section, the substructure of the sill, and

Fig. 2 is a perspective view of the metallic parts of the window sill.

Referring more particularly to thedrawings. reference numerals 4 and 5 designate a wooden base, which I prefer to use as a substructure for the window sill of my invention, although it will be readily understood that the existing wooden window sill may be employed, if modified or altered to conform to the metallic window sill parts to be now described.

The base member 4, which is preferably made from a 2 x 6 or 2 x 8, has a portion thereof removed to provide a surface 20 which slopes downwardly towards the exterior of the building, while the base member 5, which is preferably made from a l x 4, overlies the horizontal upper surface por-' tion of the member 4 and overhangs the inne edge of the latter, as shown in Fig. l. i

.The window sill proper consists'of. three-metallic parts I, 2 and 3, which are preferably made from sheet or strip aluminum, or from extruded aluminum. The part 2 comprisesa body portion which overlies and is in contact with the surface 20 of the base member 4, a downturned front flange 2', which engages and conceals the forward edge of the member 4, and an upturned rear flange 2", which engages a portion of the forward edge of the base member 5.

The sill part I comprises a flat body portion which overlies the upper surface of the member 5 and extends forwardly to a point somewhat in advance of the flange 2", a trough-like channel lfl; having longitudinally-spaced openings 9, and a flange 2|, which slopes downwardly and forwardly to the body portion of the sill part2, at which point, the flange has an upturned nosing or head 22 forming a locking groove 11. .The fiat body portion of the sill part I terminates at its rear edge in an upturnedflange 23, which serves a purpose to be presently described.

The sill parts I, I4, 2|, 2 and 2" define an air space |2,and a grooveorchannel H is cut in the parts 2| and 22 and extend from the space l2 to the point indicated in Fig. 2. The groove II is preferably in staggeredrelationship to the openings or holes 9- a The still part 3 is provided with a flange at its upper edge whichis of inverted U-shape and embraces the flange 23, and with an inturned flange 24 at its lower edge which engages the lower surface of the overhanging portionof the base member 5. The body portion of the sill part 3 engages the inner edge of the base member 5 and is provided with spaced openings 5 for screws for atachment of this sill; part to the base member 5.

Reference numeral 6 indicates -more or less diagramatically the. cross-section of the frame of a steel casement window, and reference numeral 1 indicates more *or'less diagramatically the easement window itself which is swingable in respect to the frame 6. 3

As apparent from Fig. lQth'e groove. 21 receives the lower edge of the frame 6' and'the bead or nosing 22 serves to lock the frame: in this groove. In assembling, the sill part 2 is located in proper position and the frame 6 entered in the groove I! and moved to .the position shown in Fig. 1, after which the sill part 3 is clamped over the flange 23, rocked to the position shown in Fig. l, and screwed to the base member 5; In this manner, allofthe sill, parts are, assembled into;

a unitary structure, and at the same time, the

The sill thus conveys all of the condensation from the glass and steel sash to the outside of the building. This prevents damage to the inside of the building, particularly to the plaster, paint, Sanitas, Linowall, tiles, wallpaper and other inside flnishes.

The use of the window sill of my invention also reduces cost, time of installation, and maintenance charges. It also eliminates costly replacements. It will not leak, shrink, warp or crack, requires no nails, screws, or paint, and needs no spackling inside, nor calki-ng outside. Moreover, it is highly practical, and can be quickly and easily assembled. It will be noted that a portion of the window frame 6; rests onthe outerv edge 25 of the channel it, so that the frame and sill part 2| define an air space [3. The air spaces i2 and I3 aidin minimizing the freezing of moisture on the casement window and sill, and also serve as efficient reservoirs; in case of a prolonged and severe freeze.

The metallic, parts of the sill protectthe wooden frame members of the sill from deteri- 7 possible in order to prevent heat loss.

The space IS in Fig. 2 indicates the portion of the sill which isto be closely. fitted and calked to the adjoining upright 2 x 4, wooden frame, or masonry, to prevent moisture from seeping under the sill part 2 at each end of the latter. This may also be done to each end of the channel 14, before: plaster is overlapped onto it, or before it is boxed in with wood.

It is to be understood that the form of my invention, herewith shown and described, is to be taken as a preferred example of the same, and that various changes in the. shape, size and rangement of parts maybe resortedv to, without departing from the spirit or my invention, or thes'cope of the subjoined claims. 7

Having thus described my invention, I claim:

' 1. In a window sill, a sill substructure having a stepped formation presenting an upper step and a lower step with both steps presenting upper surfaces; and forward; and rear edges','the"up-- per surface of the: lower step being. inclined forwardly and: downwardly, a flat,metal1ic sill. element covering the upper surface of the lower step and having a rear, upwardly-extending flange covering the forward edge of the upper step and a front, downwardly-extending flange covering the forward edge of the lower step, an

intermediate, metallic member covering the upper surface of the upper step, said intermediate .member being provided with a transversely-exclination of the metallic sill to form an insulating pocket therebetween, and a rear member clamping the intermediate member and metallic sill to the substructure.

2. In a window sill, a sill substructure having a stepped formation presenting an upper step and a lower step with both steps presenting upper surfaces and forward and rear edges, the upper surface of the lower step being inclined forwardly anddownwardly, a flat, metallic sill element covering the upper surface of the lower step and having a rear, upwardly-extending flange covering the forward edge of the upper step and a front, downwardly-extending flange covering the forward edge of the lower step, an intermediate metallic member covering the upper surface of the upper step, said intermediate member being provided with a transversely-extending groove having drain openings therein in front of the forward edge of the upper step and terminating-in a downwardly-inclined edge portion in engagement with the upper surface of the metallic sill, said edge having drain slots therein, the inclination of said edge portion being greater than the inclination of the metallic sill to form an insulating pocket therebeween, and a rear member clamping the intermediate member and metallic sill to the substructure.

3. In a window sill, a sill substructure having a stepped formation presenting an upper step and a lower step withboth steps presenting upper surfaces and forward and rear edges, the upper surface of the lower step being inclined forwardly and downwardly, a flat, metallic sill element covering, the upper surface of the lower step and having a rear, upwardly-extending flange covering. the forward edge of. the upper step and a front, downwardly-extending flangev covering the forward edge of the lower step, an intermediate, metallic member covering the upper surface of the upper step terminating at the rear edge thereof in an upwardly-directed flange, said intermediate member being provided with a transversely-extending groove in front of the forward edge of the upper step and terminating in a downwardly-inclined edge portion in engagement with the upper surface of the metallic sill, the inclination of said" edge portion being greater than the inclination of the metallic sill to form an insulating pocket therebetween, and a rear member engaging said upturned flange on the intermediate member and clamping the intermediate member and metallic sill to the substructure.

4.'In a window sill, a si-ll substructure having a stepped formation presenting an upper step and a lower step with both steps presenting upper surfaces and forward and rear edges, the upper surface of the lower step being inclined forwardly and downwardly, a flat, metallic sill element covering the upper surface of. the lower step and having a rear, upwardly-extending flange. covering the. forward edge of the upper step and a front; downwardly-extending. flange covering an insulating pocket therebetween, and a rear member provided at its upper edge with an inverted, U-shaped flange engaging over the upturned flange on the intermediate member and clamping the intermediate member and metallic sill to the substructure.

5. In a window sill, a sill substructure having a stepped formation presenting an upper step and a lower step with both steps presenting upper surfaces and forward and rear edges, the upper surface of the lower step being inclined forwardly and downwardly, a flat, metallic sill element covering the upper surface of the lower step and having a rear, upwardly-extending flange covering the forward edge of the upper step and a front, downwardly-extending flange covering the forward edge of the lower step, an intermediate, metallic member covering the upper surface of the upper step terminating at the rear edge thereof in an upwardly-directed flange, said intermediate member being provided with a transversely-extending groove in front of the forward edge of the upper step and terminating in a downwardly-inclined edge portion in engagement with the upper surface of the metallic sill, the inclina-' tion of said edge portion being greater than the inclination of the metallic sill to form an insulating pocket therebetween, a rear member comprising a vertically-extending web covering the rear edge of the upper step and having an inverted, U-shaped flange at its upper edge engaging over the upturned flange on the intermediate member and having a horizontally-extending flange at its lower edge engaging the lower surface of the upper step to clamp the intermediate member and metallic sill to the substructure.

6. In combination, a window provided with a frame and a window sill for cooperation therewith, said sill including a substructure having a stepped formation presenting an upper step and a lower step with both steps presenting upper surfaces and forward and rear edges, the upper surface of the lower step being inclined forwardly and downwardly, a flat, metallic sill element covering the upper surface of the lower step and having a rear, upwardly-extending flange covering the forward edge of the upper step and a front, downwardly-extending flange covering the forward edge of the lower step, an intermediate, metallic member covering the upper surface of the upper step, said intermediate member being provided with a transversely-extending groove in front of the forward edge of the upper step and terminating in a downwardly-inclined edge portion in engagement with the upper surface of the metallic sill, said edge being provided with an upturned flange, the inclination of said edge portion being greater than the inclination of the metallic sill to form an insulating pocket therebetween, and a rear member clamping the intermediate member and metallic sill to the substructure, said window frame being constructed and arranged to engage the downwardly-inclined edge portion of the intermediate member behind said upturned flange and providing an insulating air pocket between said frame and said inclined portion of the intermediate member.

LOUIS SOPLATA.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,298,190 Eveleth Mar. 25, 1919 1,722,172 Benson July 23, 1929 2,275,686 Schonberg Mar. 10, 1942 FOREIGN PATENTS Number Country Date 154,449 Switzerland July 16, 1932 

